<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>三行两列布局</title>
    <style>
        html, body {
            margin: 0;
        }
        header {
            height: 100px;
            background-color: lightblue;
        }
        #container {
            height: 500px;
            background-color: lightgreen;
        }
        footer {
            height: 100px;
            background-color: lightslategray;
        }
        nav {
            float: left;
            width: 150px;
            background-color: lightyellow;
            height: 100%;
        }
        article {
            /*margin-left: 150px;*/
            overflow: hidden;
            background-color: lightcoral;
            height: 100%;
        }
    </style>
</head>
<body>
<header></header>
<div id="container">
    <nav></nav>
    <article>
    </article>
</div>
<footer></footer>
</body>
</html>